Three-leg iron core



FIG. 1 is a front elevational view of a first embodiment of a three-leg iron core;

FIG. 2 is a rear elevational view of the first embodiment thereof;

FIG. 3 is a right side elevational view of the first embodiment thereof;

FIG. 4 is a left side elevational view of the first embodiment thereof;

FIG. 5 is a top plan view of the first embodiment thereof;

FIG. 6 is a bottom plan view of the first embodiment thereof;

FIG. 7 is a perspective view of the first embodiment thereof;

FIG. 8 is a front elevational view of a second embodiment of a three-leg iron core;

FIG. 9 is a rear elevational view of the second embodiment thereof;

FIG. 10 is a right side elevational view of the second embodiment thereof;

FIG. 11 is a left side elevational view of the second embodiment thereof;

FIG. 12 is a top plan view of the second embodiment thereof;

FIG. 13 is a bottom plan view of the second embodiment thereof; and,

FIG. 14 is a perspective view of the second embodiment thereof. 

CLAIM The ornamental design for a three-leg iron core, as shown and described. 